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build xtuple-a traje i traje ...

qt ima plugin system. on omogućava da se aplikacija dinamički dograđuje sistemom plugin-ova.

taj sistem se može iskoristiti za razbijanje xtuple monolitnog exe-a na komponente.

http://doc.qt.nokia.com/4.7/tools-plugandpaint.html

http://doc.qt.nokia.com/4.7-snapshot/plugins-howto.html

http://stackoverflow.com/questions/1011197/qt-static-linking-and-deployment

http://doc.qt.nokia.com/latest/plugins-howto.html

http://doc.qt.nokia.com/latest/qpluginloader.html

http://developer.qt.nokia.com/forums/viewthread/6603

plugin_1 init commit

hernad@macan:~/github/qt_playground/plugin_hello$ make

/usr/local/Trolltech/Qt-4.7.4/bin/moc -DQT_NO_DEBUG -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/local/Trolltech/Qt-4.7.4/mkspecs/macx-g++ -I. -I/usr/local/Trolltech/Qt-4.7.4/lib/QtCore.framework/Versions/4/Headers -I/usr/local/Trolltech/Qt-4.7.4/include/QtCore -I/usr/local/Trolltech/Qt-4.7.4/lib/QtGui.framework/Versions/4/Headers -I/usr/local/Trolltech/Qt-4.7.4/include/QtGui -I/usr/local/Trolltech/Qt-4.7.4/include -I. -F/usr/local/Trolltech/Qt-4.7.4/lib -D__APPLE__ -D__GNUC__ plugin_1.h -o moc_plugin_1.cpp
g++ -c -pipe -O2 -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5 -Wall -W -DQT_NO_DEBUG -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/local/Trolltech/Qt-4.7.4/mkspecs/macx-g++ -I. -I/usr/local/Trolltech/Qt-4.7.4/lib/QtCore.framework/Versions/4/Headers -I/usr/local/Trolltech/Qt-4.7.4/include/QtCore -I/usr/local/Trolltech/Qt-4.7.4/lib/QtGui.framework/Versions/4/Headers -I/usr/local/Trolltech/Qt-4.7.4/include/QtGui -I/usr/local/Trolltech/Qt-4.7.4/include -I. -F/usr/local/Trolltech/Qt-4.7.4/lib -o moc_plugin_1.o moc_plugin_1.cpp
g++ -headerpad_max_install_names -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5 -o plugin_1.app/Contents/MacOS/plugin_1 plugin_1.o moc_plugin_1.o   -F/usr/local/Trolltech/Qt-4.7.4/lib -L/usr/local/Trolltech/Qt-4.7.4/lib -framework QtGui -L/usr/local/Trolltech/Qt-4.7.4/lib -F/usr/local/Trolltech/Qt-4.7.4/lib -framework QtCore 
Undefined symbols:
  "_main", referenced from:
      start in crt1.10.5.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make: *** [plugin_1.app/Contents/MacOS/plugin_1] Error 1

http://doc.qt.nokia.com/latest/qlibrary.html

http://www.dtic.upf.edu/~dgarcia/Codders/qtpluginnotloading.html

i nakon puno fula, bezveznih kako to meni priliči ... moj prvi plugin radi

plug_app - aplikacija koja poziva libplugin_1.dylib commit

hernad@macan:~/github/qt_playground/plugin_hello$ ls -l libplugin_1.dylib

-rwxr-xr-x  1 hernad  staff  35152 Sep 28 18:02 libplugin_1.dylib

hernad@macan:~/github/qt_playground/plugin_hello$ ./plug_app

"/Users/hernad/github/qt_playground/plugin_hello" 
Looking for plugins at path:  "/usr/local/Trolltech/Qt-4.7.4/plugins" 
Looking for plugins at path:  "/Users/hernad/github/qt_playground/plugin_hello" 
hello

rezime¶

interface.h

sadrži ono što plugin i plug_app dijele.

sve ostalo je potpuno autonomno.

interface.h može da sadrži više klasa koje main app i plugin dijele.

Naravno main app može podržati više plugin-ova.

plugin nije ništa drugo do shared library sa dodatnim stvarkama na qt način. isto kao što je QString qt dotjerani string objekat.

naravno ovo što sam ja napisao se ne piše - hardkodirao sam dynlib.

Treba sada ovaj kod dotjerati tako ga da se u plugin/ poddirektoriju učitavaju pluginovi.